Yes, this is another flaw, but there are much bigger flaws in their work! Also, they only fasted people for 3h. I've sucked a lot of junk out of peoples' stoma

Yes, this is another flaw, but there are much bigger flaws in their work! Also, they only fasted people for 3h. I've sucked a lot of junk out of peoples' stomachs who have had longer fasts, so this is not even a glycogenolisis phase: they could easily have been digesting food still. The participants were students, so maybe some had drunk alcohol, which, like a ketone is a two-carbon molecule...